An L4 switch installed. You can use the same switch for clustering all Access Manager devices.
The LB algorithm of the L4 switch can be anything (hash/sticky bit), defined at the Real server level.
Persistence (sticky) sessions enabled on the L4 server. You usually define this at the virtual server level.
One or more Agents installed. They must all be of one type.
The base URL DNS name of this configuration must be the virtual IP address of the L4 server . The L4 balances the load between the J2EE Agents in the cluster.
The application server on which the J2EE Agents reside must support clustering.
Your DNS server must to be configured to resolve the base URL of the agent cluster to the L4 switch.